Title :
Narrowband Interference Suppression for OFDM Systems with Guard Band
Author :
Yang, Zan ; Zhao, Tingting ; Zhao, Yuping
Author_Institution :
State Key Lab. of Adv. Opt. Commun. Syst. & Networks, Peking Univ., Beijing, China
Abstract :
Narrowband interference (NBI) affects performance of orthogonal frequency division multiplexing (OFDM) system to a great extent. Although NBI can be suppressed by employing time-domain prediction error filter (PEF), its effectiveness is reduced due to the usage of guard band which interrupts the spectrum. This paper discusses this problem and proposes two methods to improve the efficiency of PEF in the presence of guard band. Simulations show that proposed methods outperform conventional PEF in the signal to interference plus noise ratio (SINR). Moreover, channel effect caused by PEF must be compensated before demodulation in OFDM system, which is also discussed in this paper.
Keywords :
OFDM modulation; filters; interference suppression; prediction theory; radiocommunication; OFDM systems; guard band; narrowband interference suppression; orthogonal frequency division multiplexing; prediction error filter; Interference; Narrowband; OFDM; Signal to noise ratio; Time domain analysis;
Conference_Titel :
Vehicular Technology Conference Fall (VTC 2010-Fall), 2010 IEEE 72nd
Conference_Location :
Ottawa, ON
Print_ISBN :
978-1-4244-3573-9
Electronic_ISBN :
1090-3038
DOI :
10.1109/VETECF.2010.5594201
